25630305 has 16 divisors (see below), whose sum is σ = 43421184. Its totient is φ = 12865280.

The previous prime is 25630261. The next prime is 25630333. The reversal of 25630305 is 50303652.

It is not a de Polignac number, because 25630305 - 2⁷ = 25630177 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50001 + ... + 50510.

It is an arithmetic number, because the mean of its divisors is an integer number (2713824).

Almost surely, 2^25630305 is an apocalyptic number.

It is an amenable number.

25630305 is a deficient number, since it is larger than the sum of its proper divisors (17790879).

25630305 is a wasteful number, since it uses less digits than its factorization.

25630305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100536.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 25630305 is about 5062.6381462633. The cubic root of 25630305 is about 294.8387704631.

Adding to 25630305 its reverse (50303652), we get a palindrome (75933957).

The spelling of 25630305 in words is "twenty-five million, six hundred thirty thousand, three hundred five".